Like every unix based developer, I need a terminal. I know, there is a terminal interface on mac by default but I haven’t liked it. My choice is iTerm. Yes I know, there are lots of disagreement choosing an app about a specific issue and you have lots of questions about iTerm or the others but one of them is the most important question. :) Why do I use iTerm? I don’t answer this question directly but I found some stackoverflow answers for you. By the way, I love splitting view and password manager feature. On the other hand, after installing iTerm, you should change some default preferences for working effectively. For example, one of them, you can’t move word by word by default while using iTerm default configuration. You should add some shortcut for this.

Some of us know that there are some types of shell and they have their configuration. You can find lots of article about about them. For example:

http://hyperpolyglot.org/unix-shells

https://lwn.net/Articles/343924/

https://news.ycombinator.com/item?id=5690235

https://www.quora.com/What-is-the-difference-between-bash-and-zsh

…

These tools and configurations will help you if you are lazy like me :) and you always create some functions, shortcuts, etc. I read them before and I decided to use Zsh. You can easily install. Besides, Zsh has plugin support to make yourself more effective.

If you want to extend an entity class and you dont want to create a new table on
your db, you need to use MappedSuperClass.

For example, you want to use OAuth2 of PHP League on your system and you
should create user model to implement server. But you have already create
another user model, I mention as BaseUser, before for your own system.
Of course You can use directly BaseUser model. In my view, this is wrong for
modular system for two reason. The first reason is you can not seperate your
server module from your base module. The second reason is, your BaseUser model
will contain unnecessary methods about OAuth2. So, you should extend BaseUser
for your OAuth module. In the first scenario, you can easily extend your
BaseUser model and add external methods for OAuth2 systems.

Lets look what the response will be. Doctrine gives you some errors about super
class:

[Doctrine\ORM\Mapping\MappingException]
Class "OAuth2Server\Entity\User" sub class of "YourModule\Entity\User" is not a valid entity or mapped
super class.

Doctrine say us, there is a class and it extends an Entity. Do something to
solve this problem because I dont know how to use this class as an entity or
what? There are some solution to solve this problem. First one is:

In this scenario, Doctrine will create us a new User table. But we don’t want
it. We want to use our BaseUser table as our OAuth2User table. We want to
extend our DB table also, whe we extends our class. You should use
MappedSuperclass feature of Doctrine like this:

For a while, I have been trying to learn AngularJS 2 and typescript. I really
like them. Last day, an error occured which is “No Directive annotation found”
while I was trying to create a directive and I don’t understand exception why
throwing but I spent lots of time on it to solve. The error is :

members:16 Error: (SystemJS) No Directive annotation found on offClickDirective
Error: No Directive annotation found on offClickDirective
at new BaseException (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:5116:27)
at DirectiveResolver.resolve (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:12790:23)
at CompileMetadataResolver.getDirectiveMetadata (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:13097:55)
at addDirective (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:13367:37)
at eval (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:13376:77)
at Array.forEach (native)
at CompileMetadataResolver._getTransitiveViewDirectivesAndPipes (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:13376:41)
at eval (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:13348:78)
at Array.forEach (native)
at CompileMetadataResolver._verifyModule (http://localhost:3000/node_modules/@angular/compiler/bundles/compiler.umd.js:13348:43)
Evaluating http://localhost:3000/dist/main.js
Error loading http://localhost:3000/dist/main.js

I also imported necessary component and classes and this is my component file
content:

After that, I thought that I had to define something to somewhere for example
systemjs.config.js, …etc. And I searched it on Google. I found lots of issues
and lots of comments about this situation. But, in fact, they were not relevant.
Because all of them, was talking about version difference or importing problems.
I had already imported all the necessary libraries. Finally, I came accros
this post and also found the
solution, too. The problem is “;” (semicolon) as usually. I remove my semicolon
after @Directive definition and problem solved. This is the last version of
the @Directive part of my code.